RAVPower Dynamo-On-the-Go RP-PB07 10,400mAh Power Bank review

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I have a problem.  It’s a personal problem, but I can admit it publicly.  I need power.  Lot’s of it.  I crave it all day (or, at least my gadgets do), and I have a fear of being without it.  So I have chargers everywhere – my house, my vehicles, my computer bag, my office.  I have reviewed several portable battery gadgets here on The Gadgeteer, and I liked them all because they did what they were supposed to do.  But just 2 years ago, I reviewed one that was a good charger but the capacity was only 1,000 mAh, which couldn’t even charge my cellphone one time.  For the same money, you can now get a battery that has 10 times that capacity.   The Dynamo-on-the-Go RP-PB07 10400mAh Portable External Battery Pack from RAVPower  has 10,400 mAh of power.  Is that enough to make me happy?  Let’s find out!

Manufacturer specs

Here is some info about the Dynamo from RAVPower regarding which gadget models it is compatible with, and the specs of the Dynamo:

Compatible models:

  • All smartphone/tablets with Micro/Mini USB connector
  • Apple: iPhone 5/iPhone 4/4S/iPhone 3GS/iPod touch/classic/nano/iPad 2/new iPad
  • HTC: One S/X/XL/Sensation 4G/XE/XL/Amaze 4G/Radar 4G/ EVO 4G/Inspire 4G/Vivid 4G/ ThunderBolt/incredible 2/Rezound
  • Samsung: Galaxy S4 S3/Mini Galaxy S3/Galaxy Note 2/Galaxy S ii/Skyrocket/Epic 4G touch/Galaxy Nexus Prime/Galaxy note/Focus S/Infuse
  • Motorola: Atrix 2/ Droid X/Triumph/ Photon 4G/Droid 3/X2
  • Blackberry Bold 9900/ Xperia Arc S/Nokia N9/lumia800


  • Capacity: 10400 mAh
  • Input: DC 5V / 1A
  • Output 1: DC 5V / 1A
  • Output 2: DC 5V / 2A
  • Size: 4.4″ x 2.75″ x 0.55″
  • Weight: 8.29 oz.
  • Product Warranty: One Full Year

Design and Overview

The RAVPower Dynamo-On-the-Go 10,400 mAh Power Bank (hereinafter referred to as the Dynamo) is roughly the same size as an iPhone 4 and about twice the thickness.  When you pick it up, you immediately feel the weight.  It has heft, as it should for carrying around 10,400 mAh.  And the design is oh-so-comfortable in the hand, with nice rounded edges all around.  The simple design has just a button on the front that lights up the indicator lights and 3 USB ports on the bottom edge for the in and out jacks.  That’s it. Nice brushed metal accents (actually made of plastic) on the sides are reminiscent of many of the cellphones today that use that look.  The case is a shiny black plastic, which is one of the few negatives I can find about this device.  Just like the shiny plastic covers of some cellphones today, it is a huge fingerprint and smear magnet, and it scratches way too easily.  I think a rubberized outer layer would have made more sense.  But the device is solid feeling, no doubt.  It feels good.

ravpower-dynamo-1The Dynamo came with a simple black felt drawstring bag (not pictured) that many devices come with today.  It also came with 2 USB cables and one power brick that appears to me to be the exact same as an iPhone 5 power brick.  In fact, everything in the box was black except this power brick.  This makes no sense to me.  This is my second negative, if I were to be a little picky.  It looks like I am borrowing someone’s iPhone 5 power adapter, and well, that just hurts my feelings.  I am being a little too picky, I know.  But that just goes to show you how hard it is for me to find something wrong with this device.

ravpower-dynamo-2A closer look at the ports on the bottom edge show 2 full-sized USB ports for connecting your devices and a small micro USB for charging the Dynamo.  As you can see from the picture, you can charge two devices at the same time and the ports are clearly marked as ‘out’, so you won’t be confused about which ports to use to charge your devices.  For some devices, like tablets, you can use the larger output capacity 2.2 amp USB port, and for gadgets like cellphones you can use the 1.1 amp USB port.  I used the Dynamo to charge multiple devices, and the next section details my personal results that I experienced.


Just like the manufacturer states, it took a little over 10 hours via the wall charger to fully charge the Dynamo from completely dead.  If you use your computer’s USB port, which most likely has a 500 mAh max output, then it will probably take you twice that long, so I don’t charge the Dynamo with my computer.

My cellphone is an HTC Thunderbolt with a 1,400 mAh battery.  From completely dead, it took 2.5 hours to charge it back to 100%.  And I used both the 1.1A and 2.2A ports to see if that made a difference.  It did not; a full charge from either port took 2.5 hours.  I was able to charge my phone six times with the Dynamo before it gave out.

I have an iPad 2, which has just under a 7,000 mAh battery.  I was able to fully charge it once with the Dynamo, which had one indicator light left afterwards.  I was then able to charge my cellphone one more time before the Dynamo died.

Conclusion and bottom line

I think I just might have discovered my holy grail of backup battery power.  I can overlook the scratched up and smudgy black plastic cover, and I can hide the white power brick from my smug iPhone-owning friends.  With this device, I can literally be away from a power outlet for days.  It’s just the right size, easy in the hand, and it performs exactly as expected. And did I mention that you can get it on Amazon for $37.99?  Are you smiling yet? The only thing that could make me happier is a Dynamo with a 20,000 mAh capacity.  So until they can pack these huge batteries into my gadgets, I’ll take the Dynamo everywhere I go.


Product Information

  • See list of supported phones in the review
  • Solid design
  • Great size
  • Huge battery capacity
  • Excellent performance
  • White power brick
  • Black plastic cover scratches and smudges easy

9 thoughts on “RAVPower Dynamo-On-the-Go RP-PB07 10,400mAh Power Bank review”

  1. Gadgeteer Comment Policy - Please read before commenting
  2. Another option to consider is the Neptor by Eagle Tech — it also has a 10,000 mAh battery, but the difference is, it’s one of the only if not the only units that enables replacement of the battery. The beautifully made metal case just slides apart and you can order spare batteries — so you can keep the charger going and your phones and tablets going for a long, long time….available on Amazon and Rakuten, and the spare batteries of available through Rakuten as well.

  3. Great review, I need power with me too, not just while out but we live in middle of nowhere and constantly having powercuts.
    Ive been looking for something with 10,000+mAh as like you we need to be able to charge phones, tablets and maybe even a laptop if Im lucky. Maybe Im pushing my luck with charging that though, I’d be happy with phone and my Nexus 10 (which is sooo power hungry).
    Ill definitely look into this one.
    Thanks for the review.

  4. @Cazi The RAV won’t charge a laptop. I don’t think any of these portable power bricks will do that, as a laptop battery is so huge. Your Nexus 10 tablet has a 9,000 mAh battery, so the RAV should be able to fully charge it one time.

  5. Thanks for all the good reviews of battery chargers, I’ve been looking around not too seriously, and have needed help finding something. Just ordered this on Amazon, $29.99!
    Hopefully, this will cover me for camping with my sin in scouts!

  6. I have one for about a month. today I tried to charge it for first time. 8 hours after starting to charge it reached 3 lighting LEDs and now about 10 hours from beginning there are still 3 lighting LEDs no flashing.
    Is there some one to know about it?

  7. @ephraim My recommendation is to run the battery down to empty and then see if it charges up to full. Try this a few times and if it never charges up to full, then return it for a replacement. Good luck!

  8. Hello Steve,
    I’ll try as your recommendation. I know that many electric home devices equipped with batteries instruct to pass several charge discharge cycles to get full capacity of the batteries. Very likely, here is the same issue.

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